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Everything You Need to Know About the Penis

Let us introduce you to the guy’s reproductive system – otherwise known as the Penis and Testes!

In this clip Hannah and Bing take you through the basics:

 

Want a break down of male genitals? Here we go!

The Testicles


These two organs are oval shaped and grow to be about 5cm in length and about 3cm wide. This is where sperm is produced and stored and it is normal for one to be a bit bigger than the other. The testicles also produce the male sex hormone testosterone. This is the hormone responsible for the majority of changes boys experience during puberty such as the deepening of their voice, rapid muscle growth, as well as increased body and facial hair.

The Duct System


Alongside the testicles is the epididymis and the vas deferens. These are muscular tubes which transport the sperm-containing fluid (semen) from the testicles towards the penis.

The Scrotum


The scrotum is a pouch or sac of skin that contains the testicles and the duct system. It’s job is to keep the sperm at the perfect temperature, in fact when it is cold it will shrivel up to keep the sperm warm but when it’s hot, the scrotum relaxes to cool its cargo!

Male anatomy

Photo Taken from WillHouse’s Flikr stream under creative commons license.


The Accessory Glands


These glands include the seminal vesicles and the prostate gland. They provide fluids that lubricate the system and help keep the sperm healthy.

Urethra


This is the channel that carries the semen outside the body when the male ejaculates. The urethra also carries urine.

The Penis


This is actually made up of two parts; the muscular shaft, the long section of the penis and the glans, which is the tip or head of the penis. The shaft is the part of the penis which hardens during an erection.

Foreskin


This is a little ‘hood’ of skin that covers the glans or tip of the penis. In some instances boys are circumcised, meaning that the hood of skin is cut away by either a doctor or a religious leader. Whether a guy is circumcised or not has no affect on the function of their penis! Check out this clip by Laci Green for some more info if you are interested to know a little more about the origin of circumcision and the debate about foreskins.

Dr Lindsey Doe goes into a bit more detail here: